Indo-1 (potassium salt)

Description: Indo-1 (potassium salt) is a ratiometric fluorescent calcium indicator. It is ideal for analyses using flow cytometry, as it uses a single excitation source, typically 349-364 nm light from an argon-ion laser. The emission maximum shifts from 475-485 nm without calcium to 400-410 nm when Indo-1 (potassium salt) binds calcium. Indo-1 (potassium salt) is prone to photobleaching, which limits its usefulness in methods involving microscopy. Smiles: [K].[K].[K].[K].[K].Cc1ccc(N(CC(O)=O)CC(O)=O)c(OCCOc2cc(ccc2N(CC(O)=O)CC(O)=O)-c2cc3ccc(cc3[nH]2)C(O)=O)c1